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The answer is : ( b) 135degree, 45 degree.
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When the sum of the angles is 90° then it is said to be complementary angles.
(i) 35°, 45°
= 35° + 45°
= 80°
80° ≠ 90°
•°• No Complementary Angle formation
(ii) 135°, 45°
= 135° + 45°
= 180°
80° ≠ 180°
•°• No Complementary Angle formation
(iii) 70°,20°
= 70° + 20°
= 90°
•°• Complementary Angle formation is there.
(iv) 70°,120°
= 70° + 120°
= 190°
190° ≠ 180°
•°• No Complementary Angle formation.
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